70 lines
1.7 KiB
C++
70 lines
1.7 KiB
C++
// Copyright (C) 2017 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Graphics module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#pragma once
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#ifndef NAZARA_UBER_SHADER_HPP
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#define NAZARA_UBER_SHADER_HPP
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#include <Nazara/Prerequisites.hpp>
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#include <Nazara/Core/Algorithm.hpp>
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#include <Nazara/Core/Bitset.hpp>
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#include <Nazara/Graphics/Config.hpp>
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#include <Nazara/Renderer/RenderPipeline.hpp>
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#include <Nazara/Shader/Ast/Nodes.hpp>
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#include <unordered_map>
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namespace Nz
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{
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class ShaderModule;
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class NAZARA_GRAPHICS_API UberShader
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{
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public:
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struct Config;
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struct Option;
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UberShader(ShaderStageTypeFlags shaderStages, const ShaderAst::StatementPtr& shaderAst);
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~UberShader() = default;
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inline ShaderStageTypeFlags GetSupportedStages() const;
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const std::shared_ptr<ShaderModule>& Get(const Config& config);
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inline bool HasOption(const std::string& optionName, Pointer<const Option>* option = nullptr) const;
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static constexpr std::size_t MaximumOptionValue = 32;
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struct Config
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{
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std::array<ShaderAst::ConstantValue, MaximumOptionValue> optionValues;
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};
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struct ConfigEqual
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{
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inline bool operator()(const Config& lhs, const Config& rhs) const;
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};
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struct ConfigHasher
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{
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inline std::size_t operator()(const Config& config) const;
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};
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struct Option
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{
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std::size_t index;
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ShaderAst::ExpressionType type;
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};
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private:
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std::unordered_map<Config, std::shared_ptr<ShaderModule>, ConfigHasher, ConfigEqual> m_combinations;
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std::unordered_map<std::string, Option> m_optionIndexByName;
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ShaderAst::StatementPtr m_shaderAst;
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ShaderStageTypeFlags m_shaderStages;
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};
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}
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#include <Nazara/Graphics/UberShader.inl>
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#endif // NAZARA_UBER_SHADER_HPP
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